tmarino-- I'm glad you saved your chick!
Hatching chicks is definitely addicting!
Welcome to BYC!!!!
I'm really impressed you got 3 to hatch in a box with a utility light!!!
Eggs are pretty tempermental needing and exact temp and humidity.
They make incubators fairly cheap if you want to keep hatching.
I have the most basic Farm Innovations still air incubator (like $45) and I have really high hatch rates from that.